Finding the Fourth Proportional to 123,383.61, 170,297.49 and 80,287.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123,383.61 : 170,297.49 = 80,287.15 : x
2. Step 2: Convert to fraction form
   123,383.61/170,297.49 = 80,287.15/x
3. Step 3: Cross multiply
   123,383.61x = 170,297.49 × 80,287.15
4. Step 4: Simplify right side
   123,383.61x = 13,672,700,124.25
5. Step 5: Solve for x
   x = 13,672,700,124.25/123,383.61
6. Step 6: Final answer
   x = 110,814.56